# NTSB MIA69F0340: Gyroplane M-2, N4772S, Chuluota, FL, October 13, 1968

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Closed
- Date: October 13, 1968
- Place: Chuluota, FL · CHULUOTA, FL
- Location: 28.6407° N, 81.1170° W: Placed by OpenAirDocs: center of Chuluota, FL, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=28.6407&lon=-81.1170&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 1 fatal
- Status: Completed, report February 27, 1969
- Report: Brief approved by the director
- NTSB case key (mKey): 107723
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA69F0340
- Page: https://openairdocs.org/ntsb/MIA69F0340

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-4526  68/10/13   CHULUOTA,FLA        GYROPLANE M-2       CR-  1  0  0  MISCELLANEOUS             STUDENT, AGE 36, 400
        TIME - 0845                    N4772S              PX-  0  0  0  DEMONSTRATION             TOTAL HOURS, ALL IN TYPE,
                                       DAMAGE-DESTROYED    OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - FLYING SEMINOLE
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           PROPELLER/ROTOR FAILURE: MAIN ROTOR                      IN FLIGHT: LOW PASS
           COLLISION WITH GROUND/WATER: UNCONTROLLED                IN FLIGHT: UNCONTROLLED DESCENT
        PROBABLE CAUSE(S)
           ROTORCRAFT - ROTOR ASSEMBLIES: MAIN ROTOR BLADES
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - SEPARATION IN FLIGHT
        REMARKS- METAL SPAR INSERT FAILED THROUGH THE OUTBOARD ATTACH BOLT HOLE AT ROTOR HEAD ATTACHMENT.
```

## Aircraft

- Registration: [N4772S](https://openairdocs.org/deregistered/N4772S-1971-01-04), registration cancelled 1971-01-04, S/N 9101964 (OpenAirDocs)
- Reported make and model: GYROPLANE M-2
- Registry model: [Experimental Gyroplane M-2](https://openairdocs.org/model/experimental-gyroplane-m-2) (registry code 05602L8) (OpenAirDocs)
- Category: Gyroplane, amateur-built
- Engines: reciprocating
- Damage: Destroyed
- Airport: Flying Seminole

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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